Field Detail

• name_

  private final java.lang.String name_

• mtype_

  private final java.lang.String mtype_

• ctypes_

  private final java.lang.String[] ctypes_

• RTYPE_VOTABLE

  public static final ResourceType RTYPE_VOTABLE

  Resource type for table.load.votable.

• RTYPE_FITS

  public static final ResourceType RTYPE_FITS

  Resource type for image.load.fits.

• RTYPE_CDF

  public static final ResourceType RTYPE_CDF

  Resource type for table.load.cdf.

• RESOURCE_TYPES

  private static final ResourceType[] RESOURCE_TYPES

• MAGIC_SIZE

  private static final int MAGIC_SIZE

  See Also:

  Constant Field Values

• logger_

  private static final java.util.logging.Logger logger_

Constructor Detail

• ResourceType

  public ResourceType​(java.lang.String name,
                      java.lang.String mtype,
                      java.lang.String[] ctypes)

  Constructor.

  Parameters:

  name - identifying name

  mtype - MType of message that will be sent

  ctypes - MIME-types to which this corresponds, supplied in normalised form (lower case, no parameters, no whitespace)

Method Detail

• getMType

  public java.lang.String getMType()

  Returns the MType of the message to be constructed.

  Returns:

  MType string

• createMessage

  public Message createMessage​(java.net.URL url)

  Returns a Message object that will forward a given URL to SAMP clients.

  Parameters:

  url - URL of resource

  Returns:

  message instance

• isContentType

  public boolean isContentType​(java.lang.String ctype)

  Indicates whether this resource type is suitable for use with a given MIME type. Note that the submitted content type may contain additional parameters and have embedded whitespace etc as permitted by RFC 2045.

  Parameters:

  ctype - content-type header value

  Returns:

  true iff this resource type is suitable for use with the given content type

• isMagic

  public abstract boolean isMagic​(byte[] magic)

  Indicates whether this resource type is suitable for use with a resource having a given magic number.

  Parameters:

  magic - buffer containing the first few bytes of resource content

  Returns:

  true iff this resource type is suitable for use with the given content

• getName

  public java.lang.String getName()

  Returns the name of this resource type.

  Returns:

  name

• toString

  public java.lang.String toString()

  Overrides:

  toString in class java.lang.Object

• getKnownResourceTypes

  public static ResourceType[] getKnownResourceTypes()

  Returns the known resource types.

  Returns:

  known instances of this class

• readHeadResourceType

  public static ResourceType readHeadResourceType​(java.net.URL url)

  Attempts to determine the resource type of a given URL by making an HTTP HEAD request and looking at the Content-Type.

  Parameters:

  url - resource location

  Returns:

  good guess at resource type, or null if can't be determined

• readContentResourceType

  public static ResourceType readContentResourceType​(java.net.URL url)

  Attempts to determine the resource type of a given URL by downloading the first part of its content and examining the magic number.

  Parameters:

  url - resource location

  Returns:

  good guess at resource type, or null if it can't be determined

• getMimeResourceType

  private static ResourceType getMimeResourceType​(java.lang.String contentType)

  Try to identify a resource type from its MIME type.

  Parameters:

  contentType - content-type header

  Returns:

  resource type, or null if not known

• getMagicResourceType

  private static ResourceType getMagicResourceType​(byte[] magic)

  Try to identify a resource type from its magic number.

  Parameters:

  magic - buffer containing first few bytes of resource content

  Returns:

  resource type, or null if not known

• createVOTableResourceType

  private static ResourceType createVOTableResourceType()

  Returns a ResourceType instance suitable for the table.load.votable SAMP MType.

  Returns:

  VOTable resource type

• createFitsImageResourceType

  private static ResourceType createFitsImageResourceType()

  Returns a ResourceType instance suitable for the image.load.fits SAMP MType.

  Returns:

  FITS image resource type

• createCdfTableResourceType

  private static ResourceType createCdfTableResourceType()

  Returns a ResourceType instance suitable for the table.load.cdf SAMP Mtype.

  Returns:

  CDF table resource type